Maxim Integrated MAX811LEUS-KABB Microprocessor Supervisory Circuit

The Maxim Integrated MAX811LEUS-KABB is a compact, highly precise microprocessor (μP) supervisory circuit designed to monitor power supplies in μP and digital systems. It provides a significant level of system reliability and accuracy required in critical applications, ensuring that the system operates optimally within its power supply parameters.

This supervisory circuit is essential for managing system reset operations during power-up, power-down, and brownout conditions. The MAX811LEUS-KABB comes in a small 4-pin SOT-143 package, making it ideal for space-constrained applications where board real estate is at a premium. Its key features include a 4.63V threshold voltage and an active-low, push-pull reset output, which ensures compatibility with a wide range of microprocessors and digital systems.

The device's reset output remains asserted for a minimum of 140ms after VCC has risen above the reset threshold level, providing ample time for the system to stabilize before the processor starts operating. This feature is critical for preventing system errors that could arise from premature operation before power levels have stabilized.

Furthermore, the MAX811LEUS-KABB offers low supply current, with a typical value of only 17μA, which is beneficial for power-sensitive applications. The circuit also includes a debounced manual reset input, allowing for a manual system reset, which can be a valuable feature during system maintenance or troubleshooting.

Designed with precision and reliability in mind, the Maxim Integrated MAX811LEUS-KABB supervisory circuit is an excellent choice for use in computers, controllers, intelligent instruments, portable/battery-powered equipment, and other μP-based systems that require effective power monitoring and management.

Overall, the MAX811LEUS-KABB from Maxim Integrated is a robust solution for ensuring system stability and is a testament to Maxim's commitment to providing high-quality, reliable integrated circuits for advanced electronic systems.